/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.ulwx.tool.log4j;

import org.apache.log4j.DefaultThrowableRenderer;
import org.apache.log4j.EnhancedThrowableRenderer;
import org.apache.log4j.spi.ThrowableRenderer;
import org.slf4j.MDC;

import com.ulwx.tool.StringUtils;


public final class MyThrowableRenderer implements ThrowableRenderer {
	private DefaultThrowableRenderer etr;

    /**
     * Construct new instance.
     */
    public MyThrowableRenderer() {
        try {
        	etr=new DefaultThrowableRenderer();
        } catch(Exception ex) {
        }
    }

    
    public String[] doRender(final Throwable throwable) {
    	String[] res=this.render(throwable);
    	for(int i=0; i<res.length; i++){
    		String val=StringUtils.trim(MDC.get("logid"));
    		if(StringUtils.hasText(val)){
    			res[i]="["+val+"]"+res[i];
    		}
    		
    	}
    	return res;
    	
    }
    /**
     * {@inheritDoc}
     */
    public String[] render(final Throwable throwable) {
      return etr.doRender(throwable);
    }

    

}
